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SLA: RF Admittance Type Level Sensor with Buildup immunity

Item Code: SLA_D

Admittance Level Limit Switch (Use media such as Low dielectric media e.g. cement, fly ash, clinkers, ESP hoppers)
  • Universal Power Supply: 18-55 V DC & 90-265 V AC
  • Application Temperature Range: Up to 1000°C
  • Output: 1 & 2 SPDT Relay
  • Process Connection: Threads and Flanges
  • Remotely mounted electronics upto 15 m
  • Available in Integral & remote models
  • Certifications: Flame Proof IIA, IIB & IP65 Housing
  • Available in rod & rope type
  • Price Range: 8000 to 22000 Validity: 6 Months
    Stock Unit: Nos

Operating Principle

Admittance level switches works on RF admittance principle. In this principle, the sense electrode and the vessel wall act as two electrodes of a capacitor and a material "shield" is proposed as an insulated electrode that will be added between ground and sense part. The sense and the shield are connected to the same source but they are electrically isolated from each other. Due to this, no RF current is flowing between the shield and the sense electrode. The main purpose of adding a shield is to block the RF current from reaching the vessel wall via the coating of the probe. This design helps the electronic circuitry to differentiate between build-up and the real material. As the level of the vessel increases, the dielectric changes which in turn causes a change in admittance. This change in admittance correctly measured by RF technique.

Applications

Cement Manufacturing Process

Huge demand for cement is rapidly increased in several years since the government has announced schemes related to infrastructure because it is a crucial material for construction sites. The production process where raw material is stored, grinded and heated at high temperature.

To handle the severe temperature environment, RF admittance level switch is available with ceramic rod probe with cooling fins to protect the electronics.

level measurement in Cement Manufacturing Plant
level measurement in Chemical Industry

Steel & Metallurgy Process

The Steel Industry anticipated to increase in the above 2-3 years that deals with 3 main ingredients like Iron Ore, Coke, and Lime. The operation goes through critical conditions where it is sometimes not possible to monitor the level instruments.

Our admittance level switch with remote mounting makes it possible to mount the process sensor up to 15m away from the level instruments. The evaluation unit is installed as per convenience.

Power Industry

The power sector is one of the most diversified sectors in India. Various types of sources are available for power generation. It is considered the backbone of industries to supply power for production operations. Power generated by steam boilers is fuelued by coal and other materials.

The moisture content in coal makes it sticky that sticks on the level sensor's probe during the monitoring operation of level detection. This issue is resolved by our admittance level switch which has build-up immunity.

level measurement in Power Industry

Valuable Insights

RF Admittance Level Switch Probes
By Dhananjay|March 29, 2019

Level Sensor Probes

Depending on the density of bulk solids and process temperature, RF admittance level sensor's probe is differentiated.

Fly Ash Detection in ESP Hopper
By Megha|May 6, 2019

Fly Ash Level Detection

Detail description of challenges and its proposed solutions of fly ash level detection in ESP Hopper.

Download Section

Admittance Level Sensor Datasheet
Datasheet

Briefly covers a general Introduction, Applications and Basic Specs.

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Admittance Level Sensor Instruction Manual
Instruction Manual

Covers Detailed Specs, Installation and Operating Instructions.

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